diff --git a/libs/audioflinger/AudioDumpInterface.h b/libs/audioflinger/AudioDumpInterface.h
new file mode 100644
index 0000000..732b97d
--- /dev/null
+++ b/libs/audioflinger/AudioDumpInterface.h
@@ -0,0 +1,101 @@
+/* //device/servers/AudioFlinger/AudioDumpInterface.h
+**
+** Copyright 2008, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License"); 
+** you may not use this file except in compliance with the License. 
+** You may obtain a copy of the License at 
+**
+**     http://www.apache.org/licenses/LICENSE-2.0 
+**
+** Unless required by applicable law or agreed to in writing, software 
+** distributed under the License is distributed on an "AS IS" BASIS, 
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+** See the License for the specific language governing permissions and 
+** limitations under the License.
+*/
+
+#ifndef ANDROID_AUDIO_DUMP_INTERFACE_H
+#define ANDROID_AUDIO_DUMP_INTERFACE_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <hardware/AudioHardwareInterface.h>
+
+namespace android {
+
+#define FLINGER_DUMP_NAME "/tmp/FlingerOut.pcm" // name of file used for dump
+
+class AudioStreamOutDump : public AudioStreamOut {
+public:
+                        AudioStreamOutDump( AudioStreamOut* FinalStream);
+                        virtual ssize_t     write(const void* buffer, size_t bytes);
+                        
+    virtual uint32_t    sampleRate() const { return mFinalStream->sampleRate(); }
+    virtual size_t      bufferSize() const { return mFinalStream->bufferSize(); }
+    virtual int         channelCount() const { return mFinalStream->channelCount(); }
+    virtual int         format() const { return mFinalStream->format(); }
+    virtual status_t    setVolume(float volume)
+                            { return mFinalStream->setVolume(volume); }
+    virtual status_t    dump(int fd, const Vector<String16>& args) { return mFinalStream->dump(fd, args); }
+    void                Close(void);
+
+private:
+    AudioStreamOut  *mFinalStream;
+    FILE            *mOutFile;     // output file
+};
+
+
+class AudioDumpInterface : public  AudioHardwareInterface
+{
+
+public:
+                        AudioDumpInterface(AudioHardwareInterface* hw);
+    virtual status_t    standby();
+    virtual AudioStreamOut* openOutputStream(
+                                int format=0,
+                                int channelCount=0,
+                                uint32_t sampleRate=0);
+
+    virtual             ~AudioDumpInterface()
+                            {delete mFinalInterface;}
+    virtual status_t    initCheck()
+                            {return mFinalInterface->initCheck();}
+    virtual status_t    setVoiceVolume(float volume)
+                            {return mFinalInterface->setVoiceVolume(volume);}
+    virtual status_t    setMasterVolume(float volume)
+                            {return mFinalInterface->setMasterVolume(volume);}
+
+    virtual status_t    setRouting(int mode, uint32_t routes)
+                            {return mFinalInterface->setRouting(mode, routes);}
+    virtual status_t    getRouting(int mode, uint32_t* routes)
+                            {return mFinalInterface->getRouting(mode, routes);}
+    virtual status_t    getMode(int* mode)
+                            {return mFinalInterface->getMode(mode);}
+    
+    // mic mute
+    virtual status_t    setMicMute(bool state)
+                            {return mFinalInterface->setMicMute(state);}
+    virtual status_t    getMicMute(bool* state)
+                            {return mFinalInterface->getMicMute(state);}
+
+    virtual status_t    setParameter(const char* key, const char* value)
+                            {return mFinalInterface->setParameter(key, value);}
+
+    virtual AudioStreamIn* openInputStream( int format, int channelCount, uint32_t sampleRate)
+                            {return mFinalInterface->openInputStream( format, channelCount, sampleRate);}
+
+    virtual status_t    dump(int fd, const Vector<String16>& args) { return mFinalInterface->dumpState(fd, args); }
+
+protected:
+    virtual status_t    doRouting() {return 0;}
+    
+    AudioHardwareInterface  *mFinalInterface;
+    AudioStreamOutDump      *mStreamOut;
+    
+};
+
+}; // namespace android
+
+#endif // ANDROID_AUDIO_DUMP_INTERFACE_H